Environment Canada is warning of a risk of frost tonight as temperatures are expected to dip close to the freezing mark. The forecast calls for a low of plus two, with mainly cloudy skies and fog patches developing overnight. With many gardens still producing in early September, residents may want to take steps to protect tender plants. Covering vegetables, flowers, or potted plants could help prevent frost damage. Sunday’s forecast looks brighter, with fog patches clearing in the morning and a high of 19 under a mainly sunny sky. Temperatures will rise through the week, reaching 25 degrees by Wednesday, with sunny conditions expected through midweek. Rain is possible on Thursday, with a chance of showers both during the day and evening.